UPDATE 2-Gaddafi forces attack outside Ajdabiyah - rebels
* Rebels say one died in ambush by Gaddafi forces
* Say Gaddafi fighters spread out in desert
* Rebels say NATO bombing Gaddafi positions (Adds some rebels gathering, explosions)
By Michael Georgy
AJDABIYAH, Libya, April 15 (Reuters) - Muammar Gaddafi's forces opened fire on rebels and killed one near the strategic eastern Libyan town of Ajdabiyah on Friday, insurgent fighters said, after their plan for a new counter-assault fizzled out.
A fighter manning an anti-aircraft gun was shot dead and two others were wounded in the attack, a kilometre (around half a mile) from Ajdabiyah's western gate, according to rebels at a checkpoint and in the town's hospital where some were treated.
"We were moving along the road. We saw a car with all its doors open, parked. All of a sudden these men jumped out of the desert and started firing on us," said fighter Mohamed Khalil.
"As we sped away, two other cars followed and fired at us all the time. We just don't have the weapons to move forward," said Khalil, who was receiving treatment at the hospital for a bullet wound in his thigh.
Rebel fighter Mansour Rachid said the Gaddafi forces were spread out in the desert west of Ajdabiyah, a gateway to the rebel stronghold of Benghazi that has swung between government and rebel control in weeks of back-and-forth fighting. Continued...